# C490 — SP’s positive rounded contribution

## Question

What supplied SP relationship can enter the shared grammar unchanged?

## Inputs

```json
{
  "creation_block": [
    4416,
    4411
  ],
  "conquest_block": [
    1406,
    1401
  ],
  "nativity_block": [
    6,
    1
  ],
  "MT_creation_block": [
    4111,
    4106
  ]
}
```

## Sources

```json
[
  "File51a §17.4"
]
```

## Opened utc

2026-09-27T22:40:02.227524+00:00

## Results

```json
{
  "conquest_widths": [
    3010,
    3010
  ],
  "nativity_widths": [
    4410,
    4410
  ],
  "SP_minus_MT": [
    305,
    305
  ],
  "Terah_plus60_comparison": [
    365,
    365
  ]
}
```

## Finding

SP supplies a block translation: both members preserve3010=7×430 to Conquest and4410=9×490 to Nativity. This is a different positive realization of the common span-and-state grammar, without replacing4416/4411 by4406.

## Reassessment

Complete the LXX lifespan reconstruction, then consolidate the cross-family result.

## Checks

```json
{
  "conquest": true,
  "nativity": true,
  "state_shift": true
}
```

## Closed utc

2026-09-27T22:40:02.227840+00:00

## Record provenance

Exact record hash: `27dc1bcb3a0ec7aedd0095603ad0b3c1ed826497488a575b040e8107c3e225ff`

Source journal: `Research_Cycles/C0482_C0531/journal.json`